A glut of refined products has worsened the already-grim outlook for U.S. crude oil for the rest of the year and the first half of 2017, traders warned this week, as the spread between near-term and future delivery prices reached its widest in five months. A stubborn, massive supply overhang punished crude over the winter as U.S. oil futures hit 12-year lows in February. As supply outages and production cuts increased, crude rallied and spreads tightened significantly in May. But the unusually large amount of gasoline and oil in storage, combined with expectations of a ramp-up in crude production, has made traders more bearish on the price outlook for late 2016 and early 2017. […]